The role of reaction to the gravitational force on a body

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SUMMARY

The discussion clarifies that a body in orbit around the Earth does not experience a normal reaction force due to the absence of a supporting surface. The gravitational force acts as the centripetal force necessary for maintaining the orbit. Consequently, there is no resultant normal force directed towards the center of the Earth, as the gravitational force alone is responsible for the orbital motion. This understanding is crucial for comprehending the dynamics of orbital mechanics.

PREREQUISITES
  • Understanding of gravitational force and its role in orbital mechanics
  • Familiarity with centripetal force concepts
  • Basic knowledge of Newton's laws of motion
  • Concept of normal force in physics
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  • Study the principles of orbital mechanics in detail
  • Learn about the effects of gravitational forces on satellite motion
  • Explore Newton's law of universal gravitation and its applications
  • Investigate the concept of inertial frames in relation to orbits
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Students of physics, aerospace engineers, and anyone interested in understanding the mechanics of orbital motion and gravitational interactions.

LeahLala
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What happens to the normal reaction of the force of gravity on a body orbiting around the Earth? The force of gravity provides the centripetal force, but does all of it get converted to centripetal force? Is there any kind of resultant force towards the centre of the Earth (due to the normal reaction)? If so, how it is obtained and what is its role ? If not, what exactly happens to it?
 
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LeahLala said:
What happens to the normal reaction of the force of gravity on a body orbiting around the Earth?
The so-called "normal force" is usually a force exerted by a surface that is supporting an object. For a body in orbit there is no support surface or normal force.

Is that what you meant by "normal reaction force"?
 

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